Improvement in steam-eng-ine governors



@patent dtjitlitt.

WILLIAM SMITH, OF PHILADELPHIA, PENNSYLVANIA.

Letters .Patent No. 100,203, dated February 22, 1870.

IMPROVEMENT IN STEAMENG-INE GOVERNORS.

The Schedule referred to in these Letters Patent and makngpart of the same.

To all whoml tt may concern y Bc it known that I, WILLIAM" SMITH, of the city and county of Phihnlelphia, and State of Pennsylvania, have invented a new and useful Improvement in Ball-Governors for Steam-Engines; and I do dereby declare that the. following is a t'nll and exact description thereof, reference beinglhad to the accompanying drawings and to the letters of reference marked thereon.

'lhe nature of my invention consists of a ball-governor, the arms of which 'are so constructed and arranged in relation to the revolving central shaft of the governor, by means ot' a radial joint-colmection with the same, that a free and easy tangential movement of the balls is effected, whereby1 the torsion of the arms, and consequentstraining of the joints incidental to the usual construction of ball-governors, are prevented.

lhe peculiar constrln'tionand arrangement of the several parts of the governor which constitute the improvement will be understood by the following description:

ln the accompanying drawings, which make a part of this spcctication Figure l is a plan of the improved governor.

Iigurc 2 is a side elevation of the same. 1

Figure 3 is anisometrical view of the valve-.rod head l).

Figure 4 `is a. view of' one of the arms, provided with a ball at a point at right angles with the dat end surface 'i of the radial projection h.

Like letters in all the tigures indicate the' same parts.

A is the stand, or permanent part of the governor.

lhe arm (l, which projects'ti'om one of its sides, sustains one end of the driving-shalt B, the other end of ing, c, in which the head E of the valve-rod F has a free vertical movement. l

lt has also radial sockets, g g, which receive the radial projections h h ofthe arms G G of the balls H 1l. lhe tiat surfaces 'i of the radial projections h of the arms tit against the vparallel sides j of the valve-rod head E, which is shownv in detail in fig. 3, and the shoulders la against the ends of the soeket-armst of the shaft D. y

The said projections are held in place by means of pins m, with which the arms are provided, which bear in the annular grooves n of the saidy projections.

Projecting ti'om the flat surfaces t) ot' said radial projections of the arms, there are. pins o which have a' free play in the cross groove-s p of the valve-rod head E.

One of the arms G is shown detached in 1in. 4. The operation is as follows: \Vhen the central rodis revolved in either direction by means of its connection with the steam-engine, as

above described, the balls H, acting according to a well-known law, tiy oft' in a tangent, represented vby red lines in tig. 1; and as they are thrown' up to ot recede from their elevated position, in their tangential' sockets as the halls Il are thrown ott' tangentially,`

there is no straining or twisting of any ofthe parts ifn motion, and consequently but little wearmg of the joints, so prominent in other ball-gt'wernors.

vWhat I claim as new, and desire to secure by Letters Patent, is-

, The combination ofthe arms G G, constructed substantially as described, with the head d ofthe central shaft D, by means ofthe radial sockets g g of said head and pins m. 1n, whereby a free and easy tangential movement; of the balls H H is effected, as and for the purpose hereinbefore described.

In testimony that the above is my invention,I have hereunto setmy hand and afxed my seal this 19th day of April, 1869. Y v

WM. SMITH. [tas] Witnesses:

STEPHEN UsTrok, W. W. DOUGHEMY. 

